PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-17:28:10
G02     211.6          50.9               15.2 +/-    1.61      19.0 +/-    1.61  0.040 / 0.080
G06     78.6           77.5               13.9 +/-    0.43      14.2 +/-    0.43  0.060 / 0.070
G12     317.2          33.4               11.0 +/-    1.16      18.1 +/-    1.16  0.050 / 0.080
G17     51.9           36.4               10.7 +/-    1.20      16.6 +/-    1.20  0.060 / 0.070
G19     26.1           56.0               12.9 +/-    0.54      15.2 +/-    0.54  0.080 / 0.200
G24     273.3          42.9               12.3 +/-    1.02      17.1 +/-    1.02  0.080 / 0.220
G28     117.6          19.0               14.2 +/-    2.60      32.1 +/-    2.60  0.050 / 0.080